Stage 0 | Complete sensory loss |
Stage 1 | Advent of deep pain |
Stage 2 | Some degree of tactile recovery and pain on superficial skin |
Stage 2+ | Emergence of hyperalgesia and complete tactile recovery and pain |
Stage 3 | Recovery of tactile sensation without pain; hyperalgesia disappearance |
Stage 3+ | Restoration of position sense, to some extent, with 2-point discrimination (2PD: 6–15 mm) |
Stage 4 | Full sensory recovery (2PD: 2–6 mm) |